Acura RL. Manual - part 485

NO - Go to step 9.

9. Reconnect the vacuum hose to the EVAP service port.

10. Remove the trunk floor trim cover.

11. Remove the EVAP access panel from the floor.

12. Disconnect the vacuum hose from the PCS line (at the EVAP canister side), and connect a T-fitting

(A) from the vacuum gauge and the vacuum pump/gauge, 0-30 in.Hg, to the hose as shown.

Fig. 24: Connecting T-Fitting From Vacuum Gauge And Vacuum Pump/Gauge To Hose
Courtesy of AMERICAN HONDA MOTOR CO., INC.

13. Do the EVAP PCS ON in the INSPECTION MENU with the HDS.

14. Slowly apply about 2 kPa (0.6 in.Hg, 15 mmHg) of vacuum to the hose.

Does it hold vacuum?

YES - Check for a restricted PCS line between the EVAP canister purge valve and the EVAP canister,
then go to step 24.

NO - Go to step 15.

15. Remove the FTP sensor with its connector connected (see FTP SENSOR REPLACEMENT ).

16. Connect a T-fitting (A) from the vacuum gauge and a vacuum pump/gauge, 0-30 in.Hg, to the FTP

sensor (B) as shown.

2007 Acura RL

2005-08 ENGINE PERFORMANCE EVAP System - RL

Friday, June 05, 2009 2:30:48 PM

Page 25

Fig. 25: Connecting T-Fitting From Vacuum Gauge And Vacuum Pump/Gauge To FTP Sensor
Courtesy of AMERICAN HONDA MOTOR CO., INC.

17. Check and record the FTP SENSOR reading in the DATA LIST with the HDS.

18. Slowly apply no more than 1.3-kPa (0.4 in.Hg, 10 mmHg) of vacuum to the hose.

19. Check the FTP SENSOR in the DATA LIST with the HDS.

Is there a difference of more than 1.1 kPa (0.31 in.Hg, 8 mmHg) before and after applying vacuum?

YES - Go to step 24.

NO - Go to step 25.

20. Reconnect the vacuum hoses to the PCS line (EVAP canister side), and reinstall the FTP sensor.

21. Disconnect the vacuum hose (A) from the EVAP canister purge valve (B), and connect a T-fitting (C)

from the vacuum gauge and the vacuum pump/gauge, 0-30 in.Hg, to the hose as shown.

NOTE:

Be careful not to exceed the pressure. If you exceed the pressure, the
FTP sensor can be damaged.

2007 Acura RL

2005-08 ENGINE PERFORMANCE EVAP System - RL

Friday, June 05, 2009 2:30:48 PM

Page 26

Fig. 26: Connecting T-Fitting From Vacuum Gauge And Vacuum Pump/Gauge To Hose
Courtesy of AMERICAN HONDA MOTOR CO., INC.

22. Do the EVAP CVS ON in the INSPECTION MENU with the HDS.

23. Slowly apply about 2 kPa (0.6 in.Hg, 15 mmHg) of vacuum to the hose.

Does the hose hold vacuum?

YES - Check for blockage at the EVAP canister port, then go to step 25.

NO - Replace the EVAP canister vent shut valve (see EVAP CANISTER PURGE VALVE
REPLACEMENT ), then go to step 25.

24. Replace the FTP sensor (see FTP SENSOR REPLACEMENT ).

25. Reconnect all hoses.

26. Turn the ignition switch ON (II).

27. Reset the PCM with the HDS.

28. Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE ).

29. Do the EVAP FUNCTION TEST in the INSPECTION MENU with the HDS.

Is the result OK?

YES - Go to step 30.

NO - Check for poor connections or loose terminals at the FTP sensor, the EVAP canister purge
valve, the EVAP canister vent shut valve, and the PCM, then go to step 1.

30. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0497 indicated?

2007 Acura RL

2005-08 ENGINE PERFORMANCE EVAP System - RL

Friday, June 05, 2009 2:30:48 PM

Page 27

YES - Check for poor connections or loose terminals at the FTP sensor, the EVAP canister purge
valve, and the PCM, then go to step 1.

NO - Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the
INDICATED DTCS TROUBLESHOOTING.

DTC P0498: EVAP CANISTER VENT SHUT VALVE CONTROL CIRCUIT LOW VOLTAGE

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

3. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0498 indicated?

YES - Go to step 6.

NO - Go to step 4.

4. Do the EVAP CVS ON in the INSPECTION MENU with the HDS.

5. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0498 indicated?

YES - Go to step 6.

NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals
at the EVAP canister vent shut valve and the PCM.

6. Turn the ignition switch OFF.

7. Disconnect the EVAP canister vent shut valve 2P connector.

8. Turn the ignition switch ON (II).

9. Measure voltage between EVAP canister vent shut valve 2P connector terminal No. 2 and body

ground.

NOTE:

Before you troubleshoot, record all freeze data and any on-board snapshot,
and review the general troubleshooting information (see GENERAL
TROUBLESHOOTING INFORMATION ).

2007 Acura RL

2005-08 ENGINE PERFORMANCE EVAP System - RL

Friday, June 05, 2009 2:30:48 PM

Page 28

Content .. 483 484 485 486 ..